Pocket adding device



March 20, 1951 F. J. PERILLO 2,545,555

POCKET ADDING DEVICE Filed May 31, 1950 INVENTOR.

F/or/noa J. Per/W0 Ai ffom eys Patented Mar. 20, 1951 UNITED STATES 'PAT- ENT 2,545,555 OFFICE POCKET ADDING DEVICE Florindo J.'Perill0, Tucson, Ariz.

Application May 31, 1950, Serial No. 165,316 3'Ciaims. (crass-4s) This invention relates-to pocket adding devices. The object of the invention is-to provide a device which can be conveniently carried and used by ay The invention will be understood from the following description of a preferred embodiment thereof, taken in connection with the accompanying drawing, in which Fig. 1 is a bottom view of the device; Fig. 2 i a top view thereof; Fig. 3 is a sectional elevation through the device on the plane 33 of Fig. 2; Fig. 4 is a top View of the device, partly in section and with some of the parts broken away; Fig. 5 is a fragmentary view of the bottom side of the penny-dial; Fig. 6 is a fragmentary view of the top side of the pennydial; Fig. 7 is a bottom view of the cover-plate; Fig. 8 is a back view of the dollar-dial; and Fig-9 is a perspective view of the detents-by which the penny-dial and the cover-plate are retained in any of the positions to which each of them may be manually rotated.

Referring to the'drawing, the convenient form of the device will be apparent from Figs. 1 andZ from which it will be evident that the various parts are arranged within a dish-shaped'housing having a bottom ill, a circular side wall It, and a lug I4 providingan opening adapted to receive a strap (not shown) by which the device may be suspended.

As shown in Fig. 1, the bottom lfiof the housing is provided witha window i 6 through-which dollar figures are visible-and a window I8 through which cents figures are visible, as hereinafter described. However, of course a single window, in place of the windows l6 and I8 may be provided. The housing maybe made of any suitable material, such as a'plastic or metal. Arranged for manual rotation in the housing, is a penny-dial 20 which, as shown in Fig.3,is provided in'its bottom side with annular cavity 22; and on both sides bears figures from to 99 which'are preferably radially arranged as shown inFigs. '4,

and 6. The figures onthe bottom side of the penny-dial 2B are located so as to be individually visiblethroughthe window I8 in the bottom ID of the housing as said penny-dial 2B is rotated, as

will be evident from Figs. 1 and 4.

Rotatably mounted on a stud 24 upwardly extending from the bottom Ii] of the housing, i a

dollar-dial 26 which (as shown in Fig. 8) is prolution of the penny-dial 20. that the edge portions-of the dollar-dial -26 -between the notches 32 are so shaped that they the rivet 40 passes.

; rotates, as shownin Fig. '1. Asis best shown in Figs. 4 and 8, the hub portion 28 of the pennydial 20 is provided with a lug 30 which'cooperates with ten notches 32 in the edge of the dollar-dial 26, therebycausing the dollar-dial 26 to rotate one-tenth of a revolution for each complete revo- It will be'noticed conform to the cylindrical surface of thehub 28 of the penny-dial 20, thereby preventing the dollar-dial ZE from movement except by the engagement of the lug 36 with the notches 32.

A cover-plate 34 is arranged so as to be manually rotatable in said housing outside of the penny-dial '28 and. on the hub portion-280i the latter, as will be apparent from'Fig. -3. --In order to reduce the friction between the cover-plate34 and the penny-dial 2G, a circular ridge 35 isprovided on the bottom side of the cover-plate 34;

but of course this ridge might beprovided on the top side of the penny-dial" 20. As shown in Figs. 2 and 8, the cover-plate 34- is provided with a window '38 through which the figures on the top side of the penny-dial 29 are visible as said penny-dial v26 is rotated.

As will be obvious from'Fig. 3, the bottom ID of the housing and the penny-dial 20 are provided with central ciroular'hole adapted to receivea rivet 40. The cover-plate 34 is retained in c0- operative relation to the penny-dial 20 by means of a disk 52 having a diameter such that its edge extends a short distance over the surface of the cover-plate 34 (as shown in Fig. 3), and thisdisk 32 isprovided with a 'central'hole through-which 'Since the rivet 40 is provided at one end with a head '44 and at the'opposite .end is shouldered and carries a washer 46, it will be evident that after the riveting ha been accomplished the rivet 413 will retain the penny-dial 2e and the cover-plate 34 in rotatable relation to the housing and to oneanother. As best shown in Fig. 2, the cover-plate 34 is provided with knobs 4? and 58; and the penny dial isprovided with knobs 19 and 5B which project through openings in the disk 42. These knobs 41-48 and 49-58 facilitate manual rotation of the cover-plate 34 and the penny-dial 2 0.

As will be evident from the drawing, the penny-dial 2i and the cover-plate 34 are retained in anyone of the positions to which each of them may be manually rotated, by detents 5! and 52 which extend in opposite directions from a central portion 53 (as shown in Fig. 9) and cooperate with the notched edges of the penny-dial Z5 and cover-plate 3G, as is best shown in Fig. 4. The central portion 53 of the detents 5! and '52 is provided with a hole 5!; adapted to receive a screw or rivet 55 by which the central portion 53 of the'detents is secured to the inside of the side wall '12 of the housing. Thereare '100 equally-spaced notches in the edge of the cover-plate'34, one of these notches being in 3 line with the window 38; and there are 100 equally-spaced notches in the edge of the pennydial 2!], and the valleys of these notches are opposite the figures on the penny-dial.

The manner in which the device is used will now be described. First, the user makes sure (by manipulation if necessary) that the pennydial 2% and the dollar-dial 26 are at their positions, as indicated in Fig. 1, and that the coverplate 34 is in the position shown in Fig. 2 in which the zeros are visible through the window 38. Then theuser utilizes the knobs A9 and 50 to rotate the penny-dial 20 in the direction of the arrow which is followed by the plus signs, until the figure representing the cost in cents of the first article which he desires to purchase is visible through the window 38 in the cover-plate 3 3. The user then rotates the coverplate 34, by means of the knobs 4148 (in either direction) until the zeros on the top side of the penny-dial 29 are again visible through the window 38. Then the user again rotates the pennydial 2!) in the same direction as before, until the price of the next article to be purchased is visible through the window 38 in the cover-plate 3 3; after which he manually rotates the cover-plate 34 (in either direction) until the zeros are again visible through the window 38. Such rotations of the penny-dial 2G and the cover-plate 3 3 are repeated for each article which the user desires to purchase. When the user has completed his selection of the articles which he desires to purchase, and the price of each of them has been recorded as just explained, the user will find that the total amount (up to $9.99) will be in dicated by the figures which are visible through the windows It and Is in the bottom it of the housing. Ihus the device enables a shopper to total-up the cost of the various articles which he desires to purchase, thereby enabling him to keep track of the amount which he is spending, and making it possible for him to check the accuracy of the total arrived at by the cashier of the store when the purchases are paid for.

Of course, in the event that the user of the adding device records in it the price of an article which he later decides not to purchase, he can deduct the price of that article by rotating the cover plate 3 in either direction until the amount to be deducted is visible through the window 38.

After which he rotates the penny dial 25} in the direction indicated by the arrow followed by minus signs, until the zeros are visible through the window 38. Then, if he so desires, he may proceed with recording in the device the cost of articles which he may subsequently decide to purchase.

What is claimed is:

1. A pocket adding device having a housing provided with a window or windows, a pennydial manually rotatable in said housing, said penny-dial being provided on both sides with circularly arranged figures from 0 to 99, the figures on the bottom side of said penny-dial being located so as to be individually visible through the window in said housing as said penny-dial is rotated, a dollar-dial rotatably mounted in said housing between said penny-dial and the bottom of said housing, means cooperating with said penny-dial and with said dollar-dial for causing said dollar-dial to rotate one-tenth of a revolution for each complete revolution of said penny-dial, said dollar-dial being provided on its bottom side with circularly arranged figures from 0 to 9 which are located so as to be individually visible through the window in said housing as said dollar-dial rotates, a cover-plate manually rotatable in said housing outside of said penny-dial and provided with a window through which the figures on the top side of said penny-dial are individually visible as said pennydial is rotated, and means for retaining said penny-dial aid said cover-plate in any of the positions to which each of them may be manually rotated.

2. A pocket addin device having a dish-shaped housing provided in its bottom with a window or windows, a penny-dial manually rotatable in said housing, said penny-dial being provided in its bottom side with an annular cavity and near its outer edge on both sides with circularly arranged figures from 0 to 99, the figures on the bottom side of said penny-dial being located so as to be individually visible through the window in said housing as said penny-dial is rotated, a dollar-dial rotatably mounted in said housing in the said annular cavity between said penny-dial and the bottom of said housing, means cooperating with said penny-dial and with said dollardial for causing said dollar-dial to rotate onetenth of ar-evolution for each complete revolution of said penny-dial, said dollar dial being provided on its bottom side with circularly arranged figures from 0 to 9 which are located so as to be individually visible through the window in said housing as said dollar-dial rotates, a cover-plate manually rotatable in said housing outside of said penny-dial and provided with a window through which the figures on the top side of said penny-dial are individually visible as said penny-dial is rotated, and means for retaining said penny-dial and said cover-plate in any of the positions to which each of them may be manually rotated.

3. A pocket adding device having a dish-shaped housing provided in its bottom with an upwardly extending stud and with a window or Windows, a penny-dial having a hub and manually rotatable in said housing, said penny-dial being provided in its bottom side with an annular cavity and near its outer edge on both sides with circularly arranged figures from 0 to 99 and on its edge with 100 notches, the figures on the bottom or" said penny-dial bein located so as to be individually visible through the window in said housing as said penny-dial is rotated, a dollardial rotatably mounted in said housing on said stud and in said annular cavity between said penny-dial and the bottom of said housing, means cooperating with said hub of the penny-dial and with said dollar-dial for causing said dollar-dial to rotate one-tenth of a revolution for each complete revolution of said penny-dial, said dollardial being provided on its bottom side with radially arranged figures from 0 to 9 which are located so as to be individually visible through the window in said housing as said dollar-dial rotates, a cover-plate having in its edge 100 notches and manually rotatable in said housing outside and on said hub of said penny-dial and provided with a window through which the figures on the top side or" said dial are individually visible as said penny-dial is rotated, and detents supported on said housing and cooperatin with the notches in the edges of said penny-dial and cover-plate for retaining them in any of the positions to which each of them may be manually rotated.

FLORINDO J. PERILLO.

No references cited. 

